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(No Model.)

' J. BYERS & G. TAYLOR.

AUTOMATIC ELEVATOR HATCHWAY GUARD.

Patented May 1, 1883,

ATTORNEYS.

V UNITED STATES PATENT OFFICE.

JOSEPH BYERS, OF NEWTONVILLE, AND GEORGE TAYLOR, OF EVERETT,

MASSACHUSETTS.

AUTOMATIC" ELEVATOR-HATCHWAY GUARD.

SPECIFICATION forming part a Letters Patent No. 276,767, dated May 1, 1883.

Application filed August 24, 1882. (No model.)

To all whom it may concern Be it known that we, JOSEPH BYERS, of llewtonville, in the county of Middlesex and State of Massachusetts, and GEORGE TAYLOR, of Everett, in the county of Middlesex and State of Massachusetts, have invented a new and Improved Automatic Elevator-Hatchway Guard, of which the following is a full, clear, and exact description.

This invention relates to an improvement in automatic elevator-hatchway guards; and it consists in the combination and arrangement of parts, substantially as hereinafter more fully set forth andclaimed.

Reference is to be had to the accompanying drawings, forming part of thisispecification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure 1 is a perspective view of an automatic guard attachment with our improvement applied thereto. Fig. 2 is a section of the fixed spring gripping'jaws to receive and hold the swinging guard.

In order to explain the'operation and show the application of our invention, we will first describe an automatic hatchway-gnard and its connection to an elevator, which is as follows:

a is a rack-bar adapted to be supported upon one of two posts or standards, 0, each of said standards also having arack, as is usual in elevators of the class towhich our improvement is applicable. This bar or rack has a frietional roll, g, against which strikes the camlower inclined end of the cam-bar d is brought into contact with the frictional roll of the rack a. The holding device of the opposite end of the guard h, which embodies our improvement, is of the following construction:

Ic is a pivoted or articulated j aw connected to a fixedjaw,j, of the stand i, both of which jaws are faced with rubber or other elastic cushions l l to prevent concussion when the guard falls. A spring, it, having one end connected to the stand i and its other end adapted to act on the jaw It, causes the latterjaw, k, to catch the free end of the guard and from rebounding as it falls.

Having thus fully described our invention, we claim as new and desire to secure by Letters Patent The combination of a spring-pressed gripping-jaw, k, with the jaw j, stand t, and the swinging guard h, substantially as described.

JOSEPH BYERS. GEORGE TAYLOR.

Witnesses:

GEO. H. WOODMAN, Tuos. J. KENNEY.

prevent it. 

